Global Systems Quiz #1

Question 1

Weather

Answer 1

Specific atmospheric conditions at a given location

Eg. Temp, air pressure, cloud cover, humidity, precipitation

Question 2

Climate

Answer 2

Average weather that occurs in an area over a period of time

Question 3

Anecdotal Evidence

Answer 3

Reports interpretations from people about events that occur

Question 4

Scientific Evidence

Answer 4

Data collected by scientists, interpretation of data of general trends NOT individual events

Question 5

Biosphere

Answer 5

Thin layer around the earth that supports life
Composed of the:
1. Atmosphere
2. Hydrosphere
3. Lithosphere

Question 6

Atmosphere

Answer 6

• All of the gases surrounding the earth 500 km thick
• Composed of 78% nitrogen (plant growth) & 21% oxygen (need by organisms)
• Contains some atmospheric dust
• allows essential rays to penetrate but filters most lethal radiation
• absorbs some sun energy

Composed of 4 layers:

1. Troposphere
2. Stratosphere
3. Mesosphere
4. Thermosphere

Question 7

Ozone Layer

Answer 7

• Where ozone (O3) is found
• absorbs UV radiation from sun (O3 + UV Radiation –> O2 + O)
• increased levels of UV radiation at ground level causes: crop damage, cataracts, increased cases of skin cancer
• Reasons for depletion: man-made chemicals, natural cycles

Question 8

Ozone Hole

Answer 8

Region in the ozone layer that has thinned

-holes been identified over Antarctica & Canadian arctic

Question 9

Lithosphere

Answer 9

• All land on Earth & 100 km below
• run under continents & oceans
• warmed by the sun & molten material in Earth’s mantle

Question 10

Hydrosphere

Answer 10

• All water on Earth
• covers 70% of Earth
• 97% salt water
• 3% fresh (glaciers, lakes, streams)
• Includes water vapors in atmosphere